﻿using System;
using System.Collections.Concurrent;
using System.Collections.Generic;
using System.Drawing;
using System.Linq;
using System.Media;
using System.Speech.Synthesis;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using WpfCallScreen.ViewModels;

namespace WpfCallScreen
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class VideoWindow : Window
    {
     
        public VideoWindow( )
        {
            InitializeComponent();
            CanvasPanel.MouseMove += delegate (object sender, MouseEventArgs e)
            {
                if (e.LeftButton == MouseButtonState.Pressed)
                {
                    if (Mouse.Captured == null) Mouse.Capture(CanvasPanel);

                    if (offset >= 0 && offset <= CanvasPanel.ActualWidth)
                    {
                        scroll.ScrollToHorizontalOffset(scroll.HorizontalOffset - (e.GetPosition(this).X - offset));
                    }
                    offset = e.GetPosition(this).X;
                }
                else
                {
                    offset = -1;
                    Mouse.Capture(null); // 释放鼠标捕获
                }
            };
        }
        /// <summary>
        /// 加载完毕
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void Window_Loaded(object sender, RoutedEventArgs e)
        {

            //生成曲线数据
            int temp = 50;
            for (int i = 0; i < 24 * 60 * 60 * 4; i++)
            {
                if (isAdd)
                {
                    dicTopPoints.Add(i, temp);
                    temp += 2;
                }
                else
                {
                    dicTopPoints.Add(i, temp);
                    temp -= 2;
                }

                if (temp == 210) isAdd = false;
                if (temp == 50) isAdd = true;
            }
            temp = 0;
            for (int i = 0; i < 24 * 60 * 60 * 4; i++)
            {
                if (isAdd)
                {
                    dicBottomPoints.Add(i, temp);
                    temp += 2;
                }
                else
                {
                    dicBottomPoints.Add(i, temp);
                    temp -= 2;
                }

                if (temp == 100) isAdd = false;
                if (temp == 0) isAdd = true;
            }
            //初始化滚动条和触发曲线绘制
            canvas.Width = dicTopPoints.Count;
            scroll.ScrollToLeftEnd();

        }
        private bool isAdd = true;

        private Dictionary<int, int> dicTopPoints = new Dictionary<int, int>();
        private Dictionary<int, int> dicBottomPoints = new Dictionary<int, int>();

        private float y_scale;

        private static int Top_Val_Max = 240;
        private static int Top_Val_Min = 30;
        private static int Top_X_Sex = 20;
        private static int Bottom = 100;
        private static int Center = 25;
        private static int BottomOffset = 0;

        private double offset = -1;

       
 

        private void ScrollViewer_ScrollChanged(object sender, ScrollChangedEventArgs e)
        {
            InitChartData((float)scroll.HorizontalOffset);
        }

        /// <summary>
        /// 根据滚动条偏移量更新需要绘制的数据
        /// </summary>
        /// <param name="offset"></param>
        private void InitChartData(float offset)
        {
            y_scale = (float)((curve.ActualHeight - Center) / (Top_Val_Max - Top_Val_Min + Bottom));

            //上图横线
            List<PointF[]> horizontalList = new List<PointF[]>();
            List<PointF[]> horizontalList_thin = new List<PointF[]>();
            for (int y = 0; y <= Top_Val_Max - Top_Val_Min; y += 10)
            {
                float currentHeight = (float)(curve.ActualHeight - (y + Bottom) * y_scale - Center);
                PointF point1 = new PointF(0, currentHeight);
                PointF point2 = new PointF((float)curve.ActualWidth, currentHeight);
                if (y % 30 == 0)
                    horizontalList.Add(new PointF[] { point1, point2 });
                else
                    horizontalList_thin.Add(new PointF[] { point1, point2 });
            }
            for (int y = 0; y <= Bottom; y += 10)
            {
                float currentHeight = (float)(curve.ActualHeight - y * y_scale - BottomOffset);
                PointF point1 = new PointF(0, currentHeight);
                PointF point2 = new PointF((float)curve.ActualWidth, currentHeight);
                if (y % 20 == 0)
                    horizontalList.Add(new PointF[] { point1, point2 });
                else
                    horizontalList_thin.Add(new PointF[] { point1, point2 });
            }

            //竖线与文字
            List<PointF[]> verticals = new List<PointF[]>();
            List<PointF[]> verticals_thin = new List<PointF[]>();

            List<PointF> timePosition = new List<PointF>();
            List<string> timeText = new List<string>();

            List<PointF> labelPosition_up = new List<PointF>();
            List<string> labelText_up = new List<string>();

            List<PointF> labelPosition_down = new List<PointF>();
            List<string> labelText_down = new List<string>();

            for (int i = 0; i < offset + curve.ActualWidth; i += Top_X_Sex * 2)
            {
                if (i < offset) continue;
                //下竖线
                PointF point1 = new PointF(i - offset, (float)(curve.ActualHeight - BottomOffset));
                PointF point2 = new PointF(i - offset, (float)(curve.ActualHeight - Bottom * y_scale - BottomOffset));
                //上竖线
                PointF point3 = new PointF(i - offset, 0);
                PointF point4 = new PointF(i - offset, (float)(curve.ActualHeight - Bottom * y_scale - Center));

                if ((i + (60 * 2)) % (60 * 2) == 0)
                {
                    verticals.Add(new PointF[] { point1, point2 });
                    verticals.Add(new PointF[] { point3, point4 });
                }
                else
                {
                    verticals_thin.Add(new PointF[] { point1, point2 });
                    verticals_thin.Add(new PointF[] { point3, point4 });
                }

                if (i % 240 == 0)
                {
                    timeText.Add(i + "");
                    timePosition.Add(new PointF(i - offset, (float)(curve.ActualHeight - Bottom * y_scale - Center)));
                }

                if ((i + (60 * 2)) % (120 * 2) == 0)
                {
                    for (int y = Top_Val_Min; y <= Top_Val_Max; y += 10)
                    {
                        if (y % 30 == 0)
                        {
                            labelText_up.Add(y + "");
                            labelPosition_up.Add(new PointF(i - offset, (float)(curve.ActualHeight - (Bottom + y - Top_Val_Min) * y_scale - Center)));
                        }
                    }
                    for (int y = 20; y <= 100; y += 10)
                    {
                        if (y % 20 == 0)
                        {
                            labelText_down.Add(y + "");
                            labelPosition_down.Add(new PointF(i - offset, (float)(curve.ActualHeight - y * y_scale)));
                        }
                    }
                }
            }

            List<PointF> top_points1 = new List<PointF>();
            for (int i = (int)offset, j = 0; i < dicTopPoints.Count && j < curve.ActualWidth; i++, j++)
            {
                top_points1.Add(new PointF(j, (float)(curve.ActualHeight - (dicTopPoints[i] + 100 - Top_Val_Min) * y_scale) - Center));
            }

            List<PointF> top_points2 = new List<PointF>();
            for (int i = (int)offset, j = 0; i < dicTopPoints.Count && j < curve.ActualWidth; i++, j++)
            {
                top_points2.Add(new PointF(j, (float)(curve.ActualHeight - (dicTopPoints[i] + 20 + 100 - Top_Val_Min) * y_scale) - Center));
            }

            List<PointF> top_points3 = new List<PointF>();
            for (int i = (int)offset, j = 0; i < dicTopPoints.Count && j < curve.ActualWidth; i++, j++)
            {
                top_points3.Add(new PointF(j, (float)(curve.ActualHeight - (dicTopPoints[i] - 20 + 100 - Top_Val_Min) * y_scale) - Center));
            }

            List<PointF> bottom_points = new List<PointF>();
            for (int i = (int)offset, j = 0; i < dicBottomPoints.Count && j < curve.ActualWidth; i++, j++)
            {
                bottom_points.Add(new PointF(j, (float)(curve.ActualHeight - dicBottomPoints[i] * y_scale - BottomOffset)));
            }

            curve.UpdateHorizontalLine(horizontalList.ToArray(), horizontalList_thin.ToArray());
            curve.UpdateVerticalLine(verticals.ToArray(), verticals_thin.ToArray());
            curve.UpdatePosition(top_points1, top_points2, top_points3, bottom_points);
            curve.UpdateTimeLabel(timePosition, timeText);
            curve.UpdateLabelPosition(labelPosition_up, labelText_up, labelPosition_down, labelText_down);
            curve.DrawPoints();
        }
    }


}
